Air India has expanded their U.S. route network very nicely over the past year or so. In December 2015, Air India launched a flight between Delhi and San Francisco, which is their furthest route yet. Then in the past few months they’ve doubled capacity on the route, as it has gone from operating 3x weekly to operating 6x weekly.
Then as of August 2016 they launched a flight between London and Newark, in the form of a one-stop flight from Ahmedabad to London to Newark.
This complements their existing U.S. service, which includes flights from Mumbai to Newark, Delhi to New York, and Delhi to Chicago.